Required information [The following information applies to the questions displayed below.] Trey Monson starts a merchandising business on December 1 and enters into the following three inventory purchases. Monson uses a periodic inventory system. Also, on December 15, Monson sells 28 units for $35 each. Purchases on December 7 Purchases on December 14 Purchases on December 21 18 units 33 units 28 units $14.00 cost $21.00 cost $25.00 cost Of the units sold, 14 are from the December 7 purchase and 14 are from the December 14 purchase. Determine the costs assigned to ending inventory when costs are assigned based on specific identification. Specific Identification Purchases: December 7 December 14 December 21 Total Cost of Goods Sold Cost Cost of Goods Available for Sale units Number of Cost per unit Cost of Goods Available for Sale Number of units sold per unit Goods Sold Ending Inventory Number of units in ending inventory Cost per Ending Inventory unit